ᐅ Installing a slot drain afterward—any experiences?

Hello everyone,
some time ago I started a thread titled "Pressure Washer – but Which One?". I have now made my decision and I’m looking forward to the work.......................

To mostly avoid issues like this, I would like to install a slot drain retroactively. Since the water always pools on the left side and doesn’t drain.
In the pictures, you can see where I would like to install it (marked in red). The red circle indicates a connection point to the soakaway system.
I would place an inspection chamber in the middle.

Would you take on such a job?
What disadvantages might I face later with this kind of drain? Are there any experiences with this?

Is the water on the left side, as seen from the photos? On the "trash bin side"?
Along the entire length? Or only at the corner?

If it runs lengthwise, you would have to plan the channel rotated by 90 degrees.

In general, if the channel’s slope is the opposite of the terrace’s slope, it will become a deep channel sloping to the right...

Or am I just misunderstanding everything? 😀

KingJulien schrieb:

Is the water standing on the left side from the photos? On the "trash bin side"?
Along the entire length? Or just at the corner?

If it’s along the length, you would have to plan the channel to be rotated by 90 degrees.

Overall, if the channel’s slope is the opposite of the terrace slope, it will create a deep channel on the right side...

Or am I just completely misunderstanding? 😀

From the left side, water stands in rows 1 and 2.
The slabs there have been laid quite level, so the water does not drain.
You can also see where the water pools by looking at the green areas.

lin0r87 schrieb:

The slabs there have also been laid very level, so the water doesn’t drain away.

Isn’t that the real problem? Or is the water standing so heavily on the grass that it then runs onto the terrace? In that case, a simple and cost-effective solution would be to dig out a spade’s width, replace some of the topsoil with coarse gravel, and possibly add some sand to the topsoil. That should significantly improve drainage.

Okay. But how exactly does the channel help with water drainage on the horizontal slabs?
And as mentioned:
If the water is standing lengthwise on the left side, you also need a channel on the left side, running lengthwise.
In that case, you would need a channel with an integrated slope.

WilderSueden schrieb:

Isn’t that the real issue? Or is the water pooling so much on the grass that it then runs onto the terrace? In that case, a simple solution might be to dig a trench about a spade’s width, replace some of the topsoil with coarse gravel, and possibly add some sand to the topsoil. That should improve drainage significantly.

We installed a drainage pipe along the curb. All considerations regarding gravel, etc., were addressed.
The water pools well in that area. The fact that the paving stones there are level might be part of the problem. However, a lot of water is coming from the garage.

I just have to say... I’m currently paying my dues and learning from mistakes ☺️